146198-57-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 146198-57-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,6,1,9 and 8 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 146198-57:
(8*1)+(7*4)+(6*6)+(5*1)+(4*9)+(3*8)+(2*5)+(1*7)=154
154 % 10 = 4
So 146198-57-4 is a valid CAS Registry Number.
146198-57-4Relevant articles and documents
Synthesis of 3-aroyltetramic acids
Tranquillini
, p. 1323 - 1333 (2007/10/02)
Recently many dienoyl tetramic acids 5 have shown interesting antimicrobial properties and a moderate inhibition of DNA-gyrase. By structural analogy we synthesized some 3-aroyltetramic acids 6; however, they did not show any activity neither against DNA-gyrase nor against Gram positive or negative bacteria.